Description of problem:
It seems like the latest xorg intel driver doesn't handle widescreen displays
very well.
Version-Release number of selected component (if applicable):
xorg-x11-drv-i810-1.6.5-11
beryl-core-0.1.99.2-2.fc7
Actual results:
This is on a laptop running 1280x800 display. Using 1.6.5-10 driver everything
works well. Using 1.6.5-11 it seems like the rightmost piece (might be about 200
pixels) doesn't work very well. No background image is drawed, and the gnome
panel and all it's applet aren't drawed. However, dragging a window into the
area works, although the background isn't redrawn when I drag the window out
again, leaving trace of it left. Rest of the screen looks like expected.
I'll try to get a log file out of it and attach later.

Created attachment 147091[details]
Screen dump
This is how my screen looks. I pulled the terminal window out to the right and
back again.
Oh, and these are my children on the desktop. Aren't they pretty ;-)

(In reply to comment #4)
> They certainly are :-). Was that whole purpose of filing this bug?
Nope. If that had been the case, I wouldn't have put a terminal over my
daughters face, would I? ;-)
Are you seeing the same behaviour? It would be nice to test with a non
widescreen monitor, but I haven't got any to try right now...

This is just texture sizing. Something about the new driver is causing your
maximum texture size to have shrunk from 2048 square to 1024 square. I don't
see anything obvious that would cause this though...

Found the following:
http://forums.fedoraforum.org/printthread.php?t=138937
I played around with driconf and changed the setting suggested in the url. Now
it looks like this:
$ glxinfo -l|grep TEXTURE_SIZE
libGL warning: 3D driver claims to not support visual 0x5b
GL_MAX_TEXTURE_SIZE = 2048
GL_MAX_3D_TEXTURE_SIZE = 256
GL_MAX_CUBE_MAP_TEXTURE_SIZE_ARB = 2048
...but nevertheless my screen looks exactly like before.

Bah. I forgot that I had set allow_large_textures=2 in .drirc on the Mac Mini,
hence the larger GL_MAX_TEXTURE_SIZE value. Still doesn't work. Removing .drirc
gives TEXTURE_SIZE values identical to the T43.

Interestingly, setting allow_large_textures=2 in /etc/drirc actually seems to
let compiz work (once you restart X). Unfortunately the performance is total
crap and everything looks to be at 8bpp. Strange.
I guess you need to set it in /etc/drirc so that the X server itself gets that
setting when it gets started by gdm?

I'm sorry, but I can't confirm this. Because of some other bug (that I'm quite
sure is filed somewhere but that I don't seem to find right now) my entire
screen is pure white when i use the intel driver. So I've really got no idea
what works and not beyond the whiteness :-/